Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac vung doc snippets" » "tac dung doc snippets", "tac vang doc snippets", "tay vung doc snippets", "tac vung moc snippets", "tac vung doi snippets", "tac vung hoc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tac vung doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac vung doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac vung doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac vung doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.